./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cad2c6f6e8ebe2adcd550e4a56b83be37e52f812ae33bfb645236c6925734dbf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:15:01,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:15:01,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:15:01,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:15:01,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:15:01,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:15:01,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:15:01,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:15:01,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:15:01,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:15:01,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:15:01,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:15:01,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:15:01,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:15:01,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:15:01,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:15:01,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:15:01,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:15:01,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:15:01,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:15:01,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:15:01,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:15:01,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:15:01,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:15:01,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:15:01,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:15:01,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:15:01,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:15:01,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:15:01,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:15:01,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:15:01,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:15:01,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:15:01,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:15:01,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:15:01,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:15:01,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:15:01,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:15:01,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:15:01,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:15:01,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:15:01,861 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2021-11-07 02:15:01,894 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:15:01,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:15:01,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:15:01,896 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:15:01,896 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:15:01,896 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:15:01,897 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:15:01,897 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:15:01,897 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:15:01,897 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:15:01,897 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:15:01,898 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:15:01,898 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:15:01,898 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:15:01,898 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:15:01,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 02:15:01,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 02:15:01,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:15:01,900 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 02:15:01,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:15:01,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:15:01,901 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 02:15:01,901 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 02:15:01,901 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 02:15:01,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:15:01,901 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:15:01,902 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:15:01,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:15:01,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:15:01,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:15:01,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:15:01,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:15:01,906 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:15:01,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:15:01,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:15:01,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:15:01,908 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cad2c6f6e8ebe2adcd550e4a56b83be37e52f812ae33bfb645236c6925734dbf [2021-11-07 02:15:02,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:15:02,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:15:02,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:15:02,288 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:15:02,289 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:15:02,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2021-11-07 02:15:02,370 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/data/cf5bfb0a0/cc93c6d1b90e4a0aabf1564d6d47d914/FLAG27105a3f1 [2021-11-07 02:15:02,922 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:15:02,922 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2021-11-07 02:15:02,936 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/data/cf5bfb0a0/cc93c6d1b90e4a0aabf1564d6d47d914/FLAG27105a3f1 [2021-11-07 02:15:03,264 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/data/cf5bfb0a0/cc93c6d1b90e4a0aabf1564d6d47d914 [2021-11-07 02:15:03,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:15:03,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:15:03,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:15:03,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:15:03,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:15:03,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:03" (1/1) ... [2021-11-07 02:15:03,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67bd5673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:03, skipping insertion in model container [2021-11-07 02:15:03,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:03" (1/1) ... [2021-11-07 02:15:03,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:15:03,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:15:03,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:15:03,528 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:15:03,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:15:03,568 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:15:03,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:03 WrapperNode [2021-11-07 02:15:03,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:15:03,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:15:03,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:15:03,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:15:03,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:03" (1/1) ... [2021-11-07 02:15:03,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:03" (1/1) ... [2021-11-07 02:15:03,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:15:03,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:15:03,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:15:03,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:15:03,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:03" (1/1) ... [2021-11-07 02:15:03,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:03" (1/1) ... [2021-11-07 02:15:03,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:03" (1/1) ... [2021-11-07 02:15:03,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:03" (1/1) ... [2021-11-07 02:15:03,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:03" (1/1) ... [2021-11-07 02:15:03,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:03" (1/1) ... [2021-11-07 02:15:03,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:03" (1/1) ... [2021-11-07 02:15:03,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:15:03,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:15:03,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:15:03,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:15:03,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:03" (1/1) ... [2021-11-07 02:15:03,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:15:03,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:15:03,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:15:03,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:15:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 02:15:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:15:03,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:15:03,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 02:15:03,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:15:03,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:15:04,164 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:15:04,164 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-07 02:15:04,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:15:04 BoogieIcfgContainer [2021-11-07 02:15:04,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:15:04,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:15:04,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:15:04,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:15:04,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:15:03" (1/3) ... [2021-11-07 02:15:04,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdadbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:15:04, skipping insertion in model container [2021-11-07 02:15:04,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:03" (2/3) ... [2021-11-07 02:15:04,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdadbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:15:04, skipping insertion in model container [2021-11-07 02:15:04,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:15:04" (3/3) ... [2021-11-07 02:15:04,185 INFO L111 eAbstractionObserver]: Analyzing ICFG Arrays01-EquivalentConstantIndices-1.c [2021-11-07 02:15:04,191 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:15:04,192 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-07 02:15:04,282 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:15:04,290 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:15:04,291 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-07 02:15:04,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:04,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 02:15:04,314 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:15:04,315 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 02:15:04,316 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-11-07 02:15:04,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:15:04,323 INFO L85 PathProgramCache]: Analyzing trace with hash 77524, now seen corresponding path program 1 times [2021-11-07 02:15:04,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:15:04,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554621889] [2021-11-07 02:15:04,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:04,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:15:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:04,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:04,535 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:15:04,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554621889] [2021-11-07 02:15:04,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554621889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:15:04,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:15:04,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 02:15:04,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043277364] [2021-11-07 02:15:04,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:15:04,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:15:04,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:15:04,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:15:04,569 INFO L87 Difference]: Start difference. First operand has 19 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:04,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:15:04,607 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-11-07 02:15:04,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:15:04,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-07 02:15:04,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:15:04,620 INFO L225 Difference]: With dead ends: 23 [2021-11-07 02:15:04,621 INFO L226 Difference]: Without dead ends: 22 [2021-11-07 02:15:04,623 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:15:04,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-07 02:15:04,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2021-11-07 02:15:04,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 10 states have (on average 2.0) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:04,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-11-07 02:15:04,662 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 3 [2021-11-07 02:15:04,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:15:04,663 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-11-07 02:15:04,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:04,664 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-11-07 02:15:04,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 02:15:04,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:15:04,665 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 02:15:04,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 02:15:04,666 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-11-07 02:15:04,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:15:04,667 INFO L85 PathProgramCache]: Analyzing trace with hash 76241, now seen corresponding path program 1 times [2021-11-07 02:15:04,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:15:04,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699016398] [2021-11-07 02:15:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:04,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:15:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:04,710 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:15:04,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699016398] [2021-11-07 02:15:04,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699016398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:15:04,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:15:04,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-07 02:15:04,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905205940] [2021-11-07 02:15:04,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:15:04,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:15:04,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:15:04,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:15:04,716 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:15:04,769 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-11-07 02:15:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:15:04,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-07 02:15:04,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:15:04,772 INFO L225 Difference]: With dead ends: 15 [2021-11-07 02:15:04,773 INFO L226 Difference]: Without dead ends: 15 [2021-11-07 02:15:04,774 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:15:04,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-07 02:15:04,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-07 02:15:04,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:04,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-11-07 02:15:04,782 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 3 [2021-11-07 02:15:04,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:15:04,782 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-07 02:15:04,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:04,784 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-11-07 02:15:04,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 02:15:04,786 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:15:04,787 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 02:15:04,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 02:15:04,788 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-11-07 02:15:04,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:15:04,793 INFO L85 PathProgramCache]: Analyzing trace with hash 76242, now seen corresponding path program 1 times [2021-11-07 02:15:04,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:15:04,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348278056] [2021-11-07 02:15:04,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:04,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:15:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:04,889 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:15:04,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348278056] [2021-11-07 02:15:04,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348278056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:15:04,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:15:04,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-07 02:15:04,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528564829] [2021-11-07 02:15:04,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:15:04,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:15:04,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:15:04,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:15:04,893 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:04,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:15:04,934 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-11-07 02:15:04,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:15:04,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-07 02:15:04,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:15:04,938 INFO L225 Difference]: With dead ends: 16 [2021-11-07 02:15:04,938 INFO L226 Difference]: Without dead ends: 16 [2021-11-07 02:15:04,939 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:15:04,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-07 02:15:04,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-07 02:15:04,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:04,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-11-07 02:15:04,946 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 3 [2021-11-07 02:15:04,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:15:04,946 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-11-07 02:15:04,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:04,947 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-11-07 02:15:04,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 02:15:04,948 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:15:04,948 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 02:15:04,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 02:15:04,948 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-11-07 02:15:04,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:15:04,950 INFO L85 PathProgramCache]: Analyzing trace with hash 73304764, now seen corresponding path program 1 times [2021-11-07 02:15:04,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:15:04,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484345961] [2021-11-07 02:15:04,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:04,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:15:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:05,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:15:05,048 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:15:05,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484345961] [2021-11-07 02:15:05,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484345961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:15:05,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:15:05,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-07 02:15:05,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583119049] [2021-11-07 02:15:05,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:15:05,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:15:05,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:15:05,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:15:05,052 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:05,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:15:05,070 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-11-07 02:15:05,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:15:05,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-07 02:15:05,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:15:05,071 INFO L225 Difference]: With dead ends: 13 [2021-11-07 02:15:05,071 INFO L226 Difference]: Without dead ends: 13 [2021-11-07 02:15:05,072 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:15:05,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-07 02:15:05,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-07 02:15:05,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:05,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-11-07 02:15:05,075 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 5 [2021-11-07 02:15:05,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:15:05,075 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-11-07 02:15:05,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:05,076 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-11-07 02:15:05,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 02:15:05,077 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:15:05,077 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-11-07 02:15:05,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 02:15:05,078 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-11-07 02:15:05,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:15:05,078 INFO L85 PathProgramCache]: Analyzing trace with hash 73303481, now seen corresponding path program 1 times [2021-11-07 02:15:05,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:15:05,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604270177] [2021-11-07 02:15:05,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:05,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:15:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:05,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:05,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:15:05,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604270177] [2021-11-07 02:15:05,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604270177] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:15:05,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549304405] [2021-11-07 02:15:05,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:05,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:15:05,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:15:05,218 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:15:05,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 02:15:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:05,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:15:05,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:05,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:15:05,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:05,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:05,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549304405] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:15:05,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1595961664] [2021-11-07 02:15:05,618 INFO L159 IcfgInterpreter]: Started Sifa with 4 locations of interest [2021-11-07 02:15:05,618 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:15:05,624 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:15:05,631 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:15:05,632 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:15:05,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:05,669 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:05,674 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:05,675 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-11-07 02:15:05,676 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:05,677 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:05,678 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-11-07 02:15:05,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-07 02:15:05,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:15:05,731 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:05,732 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-11-07 02:15:05,733 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:05,734 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-11-07 02:15:05,734 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:15:05,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:05,749 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:05,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:15:05,763 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:05,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-11-07 02:15:05,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:05,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-11-07 02:15:05,767 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 02:15:05,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:05,788 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:05,790 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:05,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-07 02:15:05,796 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:15:05,796 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:46, output treesize:44 [2021-11-07 02:15:05,813 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size [2021-11-07 02:15:05,841 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:05,850 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:05,851 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:05,852 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:05,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:15:05,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 02:15:05,859 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:05,862 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:05,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 02:15:05,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-11-07 02:15:05,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:15:05,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:05,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:15:05,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:05,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:15:05,892 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:15:05,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:05,934 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:05,936 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:05,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-11-07 02:15:05,946 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:15:05,946 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:91, output treesize:93 [2021-11-07 02:15:05,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:06,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:06,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:06,121 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.3 percent of original size [2021-11-07 02:15:06,142 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,146 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,155 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,164 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,165 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:15:06,172 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,173 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,174 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-07 02:15:06,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-11-07 02:15:06,189 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,193 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-11-07 02:15:06,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-07 02:15:06,209 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,223 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,224 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,227 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,228 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,229 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 02:15:06,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 02:15:06,232 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,233 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,235 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,236 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-07 02:15:06,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-07 02:15:06,239 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-07 02:15:06,248 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,249 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,250 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:15:06,254 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 02:15:06,255 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 02:15:06,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 194 [2021-11-07 02:15:06,263 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,268 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-11-07 02:15:06,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 220 [2021-11-07 02:15:06,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:15:06,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:15:06,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:15:06,316 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:15:06,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:15:06,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2021-11-07 02:15:06,350 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-07 02:15:06,355 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-07 02:15:06,359 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 02:15:06,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:06,422 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,442 INFO L180 QuantifierPusher]: treesize reduction 70, result has 74.5 percent of original size [2021-11-07 02:15:06,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 215 [2021-11-07 02:15:06,456 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 02:15:06,457 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:281, output treesize:215 [2021-11-07 02:15:06,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:06,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:06,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:06,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:06,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:06,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:06,535 INFO L180 QuantifierPusher]: treesize reduction 18, result has 79.5 percent of original size [2021-11-07 02:15:06,545 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,546 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,547 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,547 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,548 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:15:06,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 02:15:06,552 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,554 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 02:15:06,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-07 02:15:06,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:15:06,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:15:06,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:15:06,571 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:15:06,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:06,574 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,576 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-07 02:15:06,582 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:15:06,583 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:66 [2021-11-07 02:15:06,595 INFO L180 QuantifierPusher]: treesize reduction 18, result has 79.5 percent of original size [2021-11-07 02:15:06,612 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,616 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,617 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,618 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:15:06,620 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 02:15:06,621 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:06,622 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,631 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 02:15:06,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-07 02:15:06,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:15:06,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:15:06,645 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:15:06,646 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:15:06,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:06,653 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,655 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:06,657 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-07 02:15:06,658 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:15:06,661 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:66 [2021-11-07 02:15:06,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:06,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:06,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:06,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:06,700 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:15:07,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:15:07,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:15:07,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 6 [2021-11-07 02:15:07,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533495254] [2021-11-07 02:15:07,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:15:07,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:15:07,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:15:07,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:15:07,057 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:07,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:15:07,145 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-11-07 02:15:07,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:15:07,146 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-07 02:15:07,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:15:07,147 INFO L225 Difference]: With dead ends: 17 [2021-11-07 02:15:07,147 INFO L226 Difference]: Without dead ends: 17 [2021-11-07 02:15:07,148 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:15:07,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-07 02:15:07,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-07 02:15:07,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:07,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-11-07 02:15:07,151 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 5 [2021-11-07 02:15:07,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:15:07,152 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-11-07 02:15:07,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:07,153 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-11-07 02:15:07,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 02:15:07,153 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:15:07,154 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2021-11-07 02:15:07,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:15:07,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:15:07,359 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-11-07 02:15:07,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:15:07,359 INFO L85 PathProgramCache]: Analyzing trace with hash 617154543, now seen corresponding path program 1 times [2021-11-07 02:15:07,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:15:07,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847607809] [2021-11-07 02:15:07,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:07,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:15:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:07,432 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:07,432 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:15:07,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847607809] [2021-11-07 02:15:07,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847607809] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:15:07,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45378472] [2021-11-07 02:15:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:07,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:15:07,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:15:07,447 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:15:07,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 02:15:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:07,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:15:07,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:07,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:07,719 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:07,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45378472] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:15:07,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1461380068] [2021-11-07 02:15:07,723 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-07 02:15:07,723 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:15:07,724 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:15:07,724 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:15:07,724 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:15:07,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,738 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:07,739 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-11-07 02:15:07,740 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:07,740 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,740 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-11-07 02:15:07,741 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-07 02:15:07,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:15:07,761 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,762 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-11-07 02:15:07,763 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-11-07 02:15:07,763 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:15:07,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:07,766 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:15:07,771 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-11-07 02:15:07,772 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,772 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-11-07 02:15:07,772 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 02:15:07,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:07,775 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,776 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,777 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-07 02:15:07,780 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:15:07,780 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:46, output treesize:44 [2021-11-07 02:15:07,788 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size [2021-11-07 02:15:07,803 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:07,803 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,804 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:07,804 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,806 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-07 02:15:07,807 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:15:07,807 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:07,808 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,811 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 02:15:07,814 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 77 [2021-11-07 02:15:07,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 02:15:07,824 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 02:15:07,825 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 02:15:07,826 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:15:07,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:07,833 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,836 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.0 percent of original size [2021-11-07 02:15:07,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-07 02:15:07,839 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:15:07,843 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:78, output treesize:72 [2021-11-07 02:15:07,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:07,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:07,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:07,889 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.1 percent of original size [2021-11-07 02:15:07,902 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:07,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,910 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:07,911 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,912 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:07,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:15:07,914 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 02:15:07,915 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:07,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 02:15:07,920 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:07,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,921 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:07,922 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,923 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:15:07,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 02:15:07,924 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:07,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,926 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:07,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 02:15:07,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 02:15:07,929 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:07,932 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-07 02:15:07,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-11-07 02:15:07,937 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:07,939 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-11-07 02:15:07,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-11-07 02:15:07,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:15:07,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2021-11-07 02:15:07,965 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,968 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 02:15:07,969 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-07 02:15:07,970 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:15:07,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:15:07,984 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:15:07,985 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:07,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:15:07,985 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 02:15:07,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,002 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,010 INFO L180 QuantifierPusher]: treesize reduction 52, result has 79.4 percent of original size [2021-11-07 02:15:08,014 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-07 02:15:08,015 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 02:15:08,015 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:260, output treesize:212 [2021-11-07 02:15:08,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,068 INFO L180 QuantifierPusher]: treesize reduction 18, result has 79.5 percent of original size [2021-11-07 02:15:08,077 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,078 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,078 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,079 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,079 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:15:08,080 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 02:15:08,080 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,081 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,082 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 02:15:08,083 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-07 02:15:08,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:15:08,091 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,091 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:15:08,092 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,092 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:15:08,092 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:15:08,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,096 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,097 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,101 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-07 02:15:08,101 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:15:08,101 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:66 [2021-11-07 02:15:08,108 INFO L180 QuantifierPusher]: treesize reduction 18, result has 79.5 percent of original size [2021-11-07 02:15:08,113 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,115 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,116 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,116 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:15:08,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 02:15:08,117 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,118 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-07 02:15:08,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-07 02:15:08,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:15:08,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:15:08,128 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:15:08,129 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:15:08,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,131 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,132 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-07 02:15:08,135 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:15:08,135 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:66 [2021-11-07 02:15:08,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,223 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 197 [2021-11-07 02:15:08,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,241 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,242 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,245 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,249 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,251 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,252 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:15:08,254 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-11-07 02:15:08,254 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,256 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-11-07 02:15:08,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-07 02:15:08,260 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,264 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,294 INFO L185 QuantifierPusher]: treesize reduction 5, result has 97.7 percent of original size 208 [2021-11-07 02:15:08,303 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,309 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,310 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,311 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,312 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:15:08,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-07 02:15:08,316 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,318 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,321 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,322 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,323 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,324 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,324 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:15:08,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-07 02:15:08,326 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,327 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-07 02:15:08,331 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-07 02:15:08,331 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,333 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,335 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 02:15:08,342 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,346 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 02:15:08,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-11-07 02:15:08,351 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-07 02:15:08,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 218 [2021-11-07 02:15:08,358 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,366 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.8 percent of original size [2021-11-07 02:15:08,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 220 [2021-11-07 02:15:08,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 229 [2021-11-07 02:15:08,386 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 02:15:08,387 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,387 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:15:08,388 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,388 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:15:08,388 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:15:08,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-07 02:15:08,398 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-11-07 02:15:08,400 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-11-07 02:15:08,401 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 02:15:08,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:15:08,414 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,418 INFO L180 QuantifierPusher]: treesize reduction 172, result has 29.8 percent of original size [2021-11-07 02:15:08,420 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:15:08,420 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:15:08,421 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-07 02:15:08,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-07 02:15:08,423 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-11-07 02:15:08,423 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:350, output treesize:72 [2021-11-07 02:15:08,426 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:15:09,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:15:09,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:15:09,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-11-07 02:15:09,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4899532] [2021-11-07 02:15:09,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 02:15:09,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:15:09,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 02:15:09,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-11-07 02:15:09,245 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:09,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:15:09,299 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-11-07 02:15:09,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 02:15:09,300 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-07 02:15:09,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:15:09,301 INFO L225 Difference]: With dead ends: 29 [2021-11-07 02:15:09,301 INFO L226 Difference]: Without dead ends: 29 [2021-11-07 02:15:09,302 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-11-07 02:15:09,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-07 02:15:09,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-07 02:15:09,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:09,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-11-07 02:15:09,306 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 14 [2021-11-07 02:15:09,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:15:09,307 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-11-07 02:15:09,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:09,307 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-11-07 02:15:09,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 02:15:09,308 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:15:09,308 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2021-11-07 02:15:09,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 02:15:09,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-07 02:15:09,524 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-11-07 02:15:09,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:15:09,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1657003899, now seen corresponding path program 2 times [2021-11-07 02:15:09,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:15:09,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818217130] [2021-11-07 02:15:09,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:09,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:15:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:09,705 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:09,706 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:15:09,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818217130] [2021-11-07 02:15:09,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818217130] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:15:09,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756869497] [2021-11-07 02:15:09,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:15:09,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:15:09,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:15:09,708 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:15:09,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 02:15:09,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-07 02:15:09,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:15:09,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:15:09,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:09,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:15:10,144 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-07 02:15:10,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-07 02:15:10,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756869497] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:15:10,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 02:15:10,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [12] total 16 [2021-11-07 02:15:10,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704247672] [2021-11-07 02:15:10,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:15:10,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:15:10,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:15:10,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-11-07 02:15:10,295 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:10,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:15:10,325 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2021-11-07 02:15:10,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:15:10,325 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-07 02:15:10,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:15:10,326 INFO L225 Difference]: With dead ends: 28 [2021-11-07 02:15:10,326 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 02:15:10,327 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-11-07 02:15:10,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 02:15:10,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 02:15:10,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:10,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 02:15:10,328 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-11-07 02:15:10,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:15:10,328 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 02:15:10,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:10,328 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 02:15:10,329 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 02:15:10,332 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-11-07 02:15:10,332 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-11-07 02:15:10,333 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-11-07 02:15:10,333 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-11-07 02:15:10,333 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-11-07 02:15:10,333 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-11-07 02:15:10,333 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-11-07 02:15:10,334 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-11-07 02:15:10,334 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-11-07 02:15:10,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:15:10,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:15:10,561 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2021-11-07 02:15:10,563 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:15:10,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:15:10 BoogieIcfgContainer [2021-11-07 02:15:10,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:15:10,566 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:15:10,566 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:15:10,566 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:15:10,566 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:15:04" (3/4) ... [2021-11-07 02:15:10,569 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 02:15:10,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-07 02:15:10,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-07 02:15:10,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-07 02:15:10,612 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 02:15:10,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:15:10,613 INFO L168 Benchmark]: Toolchain (without parser) took 7343.49 ms. Allocated memory was 86.0 MB in the beginning and 155.2 MB in the end (delta: 69.2 MB). Free memory was 49.0 MB in the beginning and 73.4 MB in the end (delta: -24.4 MB). Peak memory consumption was 44.8 MB. Max. memory is 16.1 GB. [2021-11-07 02:15:10,613 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 86.0 MB. Free memory is still 65.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:15:10,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.86 ms. Allocated memory was 86.0 MB in the beginning and 127.9 MB in the end (delta: 41.9 MB). Free memory was 48.8 MB in the beginning and 104.2 MB in the end (delta: -55.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:15:10,614 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.16 ms. Allocated memory is still 127.9 MB. Free memory was 104.2 MB in the beginning and 102.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:15:10,614 INFO L168 Benchmark]: Boogie Preprocessor took 52.53 ms. Allocated memory is still 127.9 MB. Free memory was 102.7 MB in the beginning and 101.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:15:10,615 INFO L168 Benchmark]: RCFGBuilder took 496.05 ms. Allocated memory is still 127.9 MB. Free memory was 101.6 MB in the beginning and 90.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:15:10,615 INFO L168 Benchmark]: TraceAbstraction took 6395.27 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 90.1 MB in the beginning and 75.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 43.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:15:10,615 INFO L168 Benchmark]: Witness Printer took 46.19 ms. Allocated memory is still 155.2 MB. Free memory was 75.5 MB in the beginning and 73.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:15:10,617 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 86.0 MB. Free memory is still 65.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.86 ms. Allocated memory was 86.0 MB in the beginning and 127.9 MB in the end (delta: 41.9 MB). Free memory was 48.8 MB in the beginning and 104.2 MB in the end (delta: -55.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.16 ms. Allocated memory is still 127.9 MB. Free memory was 104.2 MB in the beginning and 102.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.53 ms. Allocated memory is still 127.9 MB. Free memory was 102.7 MB in the beginning and 101.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 496.05 ms. Allocated memory is still 127.9 MB. Free memory was 101.6 MB in the beginning and 90.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6395.27 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 90.1 MB in the beginning and 75.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 43.4 MB. Max. memory is 16.1 GB. * Witness Printer took 46.19 ms. Allocated memory is still 155.2 MB. Free memory was 75.5 MB in the beginning and 73.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 14]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 10]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 6.2s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 51 SDslu, 55 SDs, 0 SdLazy, 110 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=6, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 104 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 136 ConstructedInterpolants, 1 QuantifiedInterpolants, 981 SizeOfPredicates, 0 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 201/355 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-07 02:15:10,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c534545b-6e89-47ef-a472-2ca712d6ef7b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE